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CN100559642C - Constituent part for fuel cell - Google Patents

Constituent part for fuel cell Download PDF

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Publication number
CN100559642C
CN100559642C CNB2005800482408A CN200580048240A CN100559642C CN 100559642 C CN100559642 C CN 100559642C CN B2005800482408 A CNB2005800482408 A CN B2005800482408A CN 200580048240 A CN200580048240 A CN 200580048240A CN 100559642 C CN100559642 C CN 100559642C
Authority
CN
China
Prior art keywords
mea
aforementioned
packing ring
rubber
fuel cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB2005800482408A
Other languages
Chinese (zh)
Other versions
CN101120473A (en
Inventor
冈部达也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nok Corp
Original Assignee
Nok Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nok Corp filed Critical Nok Corp
Publication of CN101120473A publication Critical patent/CN101120473A/en
Application granted granted Critical
Publication of CN100559642C publication Critical patent/CN100559642C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0276—Sealing means characterised by their form
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/028—Sealing means characterised by their material
    • H01M8/0284—Organic resins; Organic polymers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M2008/1095—Fuel cells with polymeric electrolytes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

A kind of constituent part for fuel cell is provided, with packing ring (3) integrated molding in the constituent part for fuel cell (1) of MEA (2), packing ring (3) can one-shot forming, needn't go up at MEA (2) and form through hole, thrust is less, effective during MEA (2) compression., have: MEA (2) is configured between a pair of isolator (4) compression during the unit assembling for this reason; Rubber impregnated portion (5), the peripheral edge portion that is immersed in MEA (2) by the part as the rubber of packing ring moulding material forms; Plain washer portion (6) is formed by the aforementioned rubber at aforementioned rubber impregnated portion (5) outer circumferential side integrated molding; The recess (8) that translation is used when lip circle (7) and aforementioned lip circle (7) compression is gone up formation in aforementioned plain washer portion (6).Thickness (the d of the peaceful washer portion of rubber impregnated portion (5) (6) 3) be set at the thickness (d of the aforementioned MEA (2) when assembling with the unit 2) identical.

Description

Constituent part for fuel cell
Technical field
The present invention relates to the to act as a fuel constituent part for fuel cell of battery inscape is meant especially with the constituent part for fuel cell of packing ring integrated molding in MEA (film electrode composite element).
Background technology
The packing ring that is used for the gas flow path of each unit in the fuel cell stack, the structure of normal use is, the packing ring integrated molding that will be formed by elastomers such as rubber is on isolator.In addition, also exploitation wishes to simplify the technology (patent document 1) of cellular construction, GDL (gas diffusion layers in a part that constitutes MEA, form by being cavernous material) go up the lip circle that forms packing ring, guarantee the independent sealed property of GDL and do not have sealer to be molded into isolator by flooding liquid rubber simultaneously in the lip circle formation part of GDL.
But, in the above-mentioned prior art, must carry out flooding respectively/moulding lip circle to the GDL of the amberplex both sides of MEA, the moulding of packing ring needs twice, perhaps, just must open through hole on MEA if wish one-shot forming, or the like, these are all improper.In addition, because the state of dipping has the possibility of electric leakage, during MEA compression simultaneously, because the thrust that the reaction force of GDL must be excessive, these are also improper.
Patent document 1: the spy opens the 2004-95565 communique
Summary of the invention
In view of above some, the purpose of this invention is to provide a kind of constituent part for fuel cell, with the packing ring integrated molding in the constituent part for fuel cell of MEA, packing ring can one-shot forming, needn't be on MEA the moulding through hole, the thrust during the MEA compression is little, effective.
In order to achieve the above object, constituent part for fuel cell of the present invention is characterised in that the packing ring integrated molding is had in the constituent part for fuel cell of MEA: be configured between a pair of isolator compressed MEA when assembling in the unit; Impregnated in the peripheral edge portion of aforementioned MEA and the rubber impregnated portion that forms as the rubber part of packing ring moulding material; Outer circumferential side integrated molding in aforementioned rubber impregnated portion, the plain washer portion that forms by aforementioned rubber; The lip circle of moulding and translation is used during for aforementioned lip circle compression recess in aforementioned plain washer portion.Constituent part for fuel cell feature of the present invention also is, is that the thickness of aforementioned MEA is identical when assembling with the unit with the thickness setting of aforementioned rubber impregnated portion peace washer portion.
Constituent part for fuel cell of the present invention with said structure, the outer circumferential side in rubber impregnated portion forms plain washer portion in the formation rubber impregnated portion on the peripheral edge portion of MEA, be formed with lip circle and recess in the plain washer portion, so, packing ring is not the both sides, plane at MEA, but whole integrated molding is in the peripheral part of MEA.In addition, be that the thickness of MEA is identical when assemble with the unit with the thickness setting of rubber impregnated portion peace washer portion, when this structure was assembled in the unit, the lip circle of MEA and packing ring compressed, and the peaceful washer portion of rubber impregnated portion is not compressed.
The present invention has following effect
That is, in the invention described above, whole with the peripheral part of packing ring integrated molding in MEA, the moulding of packing ring can once be finished, needn't be on MEA the moulding through hole.In addition, during the unit assembling, the lip circle compression of MEA and packing ring, and rubber impregnated portion peace washer portion is not compressed, and compares with the situation that these elements all compress, the thrust in the time of can reducing the MEA compression.Thus, accomplish the end in view by above these: constituent part for fuel cell is provided, with the packing ring integrated molding in the constituent part for fuel cell of MEA, the moulding of packing ring can once be finished, needn't form through hole on MEA, the thrust during the MEA compression is little, effective.
In addition, compression MEA and lip circle when the unit is assembled, this MEA and lip circle will produce reaction force, and the thickness of MEA reaches when compressing predetermined value, rubber impregnated portion peace washer portion just begins compression, therefore, the reaction force addition that reaction force that this rubber impregnated portion peace washer portion produces and MEA and lip circle produce, reaction force sharply increases.Thus, can utilize this phenomenon in the size management when assembling in the unit, that is, stop compression when reaction force sharply increases, the size management during the unit assembling can become easy.
Description of drawings
Fig. 1 is the major part sectional view of the constituent part for fuel cell of the embodiment of the invention, the major part sectional view of state before Fig. 1 (A) expression unit assembling, the major part sectional view of state during the assembling of Fig. 1 (B) expression unit.
Fig. 2 is the manufacture method key diagram of the same constituent part for fuel cell of expression.
Symbol description
1 constituent part for fuel cell 2MEA
3 packing rings, 4 isolators
6 plain washer portions of 5 rubber impregnated portions
7 lip circles, 8 recesses
10 moulding type tools, 11 vulcanized rubber portions
12,13 space 14MEA compression units
Embodiment
The application comprises following execution mode,
(1) form dipping portion in full week of the circumferential part of MEA, the thickness when thickness compress with MEA is identical, simultaneously, divides outside formation plain washer in dipping portion, and the lip circle that has lip circle and lip circle both sides on the plain washer translation is used when compressing cuts out part.Also have, the thickness of MEA was identical when the thickness of MEA dipping portion and plain washer was assembled with the unit.
(2) in the complete all dipping parts that forms wide 2mm of circumferential part of MEA, the thickness when thickness compresses with MEA is identical, divides the outside to form plain washer in dipping portion.And the formation packing ring, structure is to have the part of cutting out that lip circle when compression translation of lip circle and lip circle both sides uses on the plain washer.Be characterised in that in addition the thickness of MEA was identical when the thickness of MEA dipping portion peace washer portion was assembled with the unit, the size management during the unit assembling easily.
(3) in the structure of above-mentioned (1) or (2), because the unit assembling time is only compressed lip circle part, less thrust just can be fastening, simultaneously because the thickness of dipping portion and rubbery flat gasket circle portion when assembling with the unit MEA compressed thickness identical, size is managed easy.That is, compression MEA because rubber impregnated portion and rubbery flat gasket circle portion do not compress, has only the lip circle partly to compress during the unit assembling, and less thrust just can be compressed.Also have because the thickness of dipping portion peace washer portion during with compression the thickness of MEA identical, in the size management of element thickness, according to the reaction force of lip circle portion and the difference between the plain washer reaction force, the size when being convenient to the unit assembling is managed during the unit assembling.
Embodiment
Following foundation illustrates embodiments of the invention.
Fig. 1 is the major part sectional view of the constituent part for fuel cell (being also referred to as packing ring and MEA integration product) 1 of the expression embodiment of the invention, the major part of state before Fig. 1 (A) expression unit assembling, the major part of (assembling back, unit) state during assembling of Fig. 1 (B) expression unit.
As shown in the figure, the constituent part for fuel cell 1 of this embodiment has, with packing ring 3 integrated moldings in the constituent part for fuel cell 1 of MEA (film electrode composite element) 2, the MEA 2 of compression when disposing the unit assembling between a pair of isolator 4,4, peripheral edge portion at this MEA 2, by the part of dipping, be formed with rubber impregnated portion 5 as the rubber of packing ring moulding material.In addition, outer circumferential side in this rubber impregnated portion 5 by aforementioned rubber integrated molding plain washer portion 6, is formed with lip circle 7 and recess 8 on the plane of this plain washer portion 6, lip circle 7 closely contacts with isolator 4 and plays sealing function, and recess 8 is that these lip circle 7 translations are used when compressing for lip circle 7.
MEA 2 is, for example, disposes GDL (gas diffusion layers) respectively across the electrode layer of amberplex upper and lower surface, because GDL is by cellular forming materials such as carbon fibers, rubber can be flooded in its inside, and its thickness can be from d during the unit assembling 1(Fig. 1 (A)) compression is reduced to d 2(Fig. 1 (B)).MEA2 thickness d before the unit assembling 1For example be 1mm, MEA2 thickness d during the unit assembling 2For example be 0.6～0.7mm.
The MEA 2 of varied in thickness is corresponding, the thickness d of rubber impregnated portion 5 peaceful washer portion 6 with above-mentioned compression 3, just be set at the thickness d of MEA 2 when assembling during moulding with the unit in beginning 2Identical (d 3=d 2), so on the upper and lower surface of the plain washer portion 6 that sets of size respectively integrated molding lip circle 7 is arranged, be formed with recess 8 respectively at the interior all sides and the outer circumferential side of lip circle 7.The height h of lip circle 7 for example is 0.3mm.In addition, the wide w of rubber impregnated portion 5 1For example be 1～3mm, the wide w of plain washer portion 6 (being packing ring 3) 2For example be 3mm.
When making the constituent part for fuel cell 1 of said structure,, under this state, inject rubber, moulding packing ring 3 as the packing ring moulding material with the inside that MEA 2 inserts moulding type tool 10 as shown in Figure 2.Part rubber impregnated forms rubber impregnated portion 5 at the peripheral part of MEA 2.Also have, in the vulcanized rubber portion 11 of moulding type tool 10 as shown in the figure, except the space 13 of inserting space 12 that MEA2 uses and moulding packing ring 13 usefulness, be provided with stop dipping usefulness the MEA compression unit that is overshooting shape 14 for best.
In the constituent part for fuel cell 1 of said structure, as mentioned above, when the peripheral edge portion of MEA 2 forms dipping portion 5, further the outer circumferential side in dipping portion 5 forms plain washer portion 6, form lip circle 7 and recess 8 on the plane of plain washer portion 6, because this structure, shown in Fig. 1 (A), packing ring 3 is not the both sides, plane at MEA2, but whole integrated molding is in the peripheral part of MEA 2.Therefore, use the moulding type tool 10 as shown in the figure can one-shot forming packing ring 3, also needn't on MEA 2, form material interconnecting parts such as through hole.
In addition, the thickness d of rubber impregnated portion 5 peaceful washer portion 6 3, be set at the thickness d of MEA 2 when assembling with the unit 2Identical, because this structure, shown in Fig. 1 (B), lip circle 7 compressions of MEA 2 and packing ring 3 during the unit assembling, and rubber impregnated portion 5 peaceful washer portion 6 are not compressed.Thus, compare the thrust in the time of to reduce the MEA2 compression with the situation that these elements all compress.
Thus, accomplish the end in view, constituent part for fuel cell 1 is provided by above these, in the constituent part for fuel cell 1 of MEA2, the moulding of packing ring 3 can once be finished at integrated molding packing ring 3, needn't form through hole etc. on MEA 2, thrust during MEA 2 compressions is little, effective.
In addition, as being described in detail of front, the reaction force when utilizing compression sharply increases phenomenon, and the size management during the unit assembling can become easy.

Claims (1)

1. a constituent part for fuel cell is characterized in that, packing ring (3) integrated molding is had in the constituent part for fuel cell (1) of MEA (2):
MEA (2) is configured between a pair of isolator (4), is compressed during the unit assembling;
Rubber impregnated portion (5), the peripheral edge portion that is immersed in MEA (2) by the part as the rubber of packing ring moulding material forms;
Plain washer portion (6) at aforementioned rubber impregnated portion (5) outer circumferential side integrated molding, is formed by aforementioned rubber;
Lip circle (7) and aforementioned lip circle (7) recess that translation is used when being compressed (8) are gone up formation in aforementioned plain washer portion (6);
Thickness (the d of the peaceful washer portion of aforementioned rubber impregnated portion (5) (6) 3) all be set at the thickness (d of the aforementioned MEA (2) when assembling with the unit 2) identical.
CNB2005800482408A 2005-09-06 2005-09-06 Constituent part for fuel cell Expired - Fee Related CN100559642C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2005/016285 WO2007029309A1 (en) 2005-09-06 2005-09-06 Component for constituting fuel cell

Publications (2)

Publication Number Publication Date
CN101120473A CN101120473A (en) 2008-02-06
CN100559642C true CN100559642C (en) 2009-11-11

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CNB2005800482408A Expired - Fee Related CN100559642C (en) 2005-09-06 2005-09-06 Constituent part for fuel cell

Country Status (5)

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US (2) US20080213649A1 (en)
EP (1) EP1923943B1 (en)
KR (1) KR101199736B1 (en)
CN (1) CN100559642C (en)
WO (1) WO2007029309A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5062389B2 (en) 2005-07-15 2012-10-31 Ｎｏｋ株式会社 Fuel cell and manufacturing method thereof
US8883365B2 (en) * 2010-02-22 2014-11-11 GM Global Technology Operations LLC Fuel cell stack discrete header
JP6383203B2 (en) * 2014-07-25 2018-08-29 Nok株式会社 Manufacturing method of plate-integrated gasket
DE102016202010A1 (en) 2016-02-10 2017-08-10 Volkswagen Aktiengesellschaft Bipolar plate with asymmetric sealing sections, and fuel cell stack with such
JP2019190604A (en) * 2018-04-27 2019-10-31 Nok株式会社 Gdl-integrated gasket and its manufacturing method
US11641018B2 (en) 2018-06-22 2023-05-02 Hyundai Motor Company Unit cell of fuel cell and method of manufacturing the same
KR102781441B1 (en) 2018-10-05 2025-03-12 현대자동차주식회사 Estimating method and controlling method for water content of fuel cell and system of the same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19703214C2 (en) * 1997-01-29 2003-10-30 Proton Motor Fuel Cell Gmbh Membrane electrode unit with integrated sealing edge and process for its manufacture
DE69818874T2 (en) * 1997-07-16 2004-05-19 Ballard Power Systems Inc., Burnaby Process for producing an elastic seal for the membrane electrode arrangement (mea) in an electrochemical fuel cell
AU2001258800A1 (en) * 2000-06-29 2002-01-08 Nok Corporation Constituent part for fuel cell
JP2002042838A (en) * 2000-07-31 2002-02-08 Honda Motor Co Ltd Fuel cell and manufacturing method for porous conductor, seal structural body, and electrode film structural body
AU6060601A (en) * 2000-11-21 2002-06-03 Nok Corp Constituent part for fuel cell
KR100525974B1 (en) * 2002-08-07 2005-11-03 마쯔시다덴기산교 가부시키가이샤 Fuel cell
US7070876B2 (en) * 2003-03-24 2006-07-04 Ballard Power Systems, Inc. Membrane electrode assembly with integrated seal
JP4051076B2 (en) * 2004-02-02 2008-02-20 松下電器産業株式会社 Polymer electrolyte fuel cell
JP5062389B2 (en) * 2005-07-15 2012-10-31 Ｎｏｋ株式会社 Fuel cell and manufacturing method thereof

Also Published As

Publication number Publication date
US20140220472A1 (en) 2014-08-07
KR101199736B1 (en) 2012-11-08
EP1923943A1 (en) 2008-05-21
KR20080041598A (en) 2008-05-13
EP1923943A4 (en) 2009-10-28
WO2007029309A1 (en) 2007-03-15
CN101120473A (en) 2008-02-06
US20080213649A1 (en) 2008-09-04
EP1923943B1 (en) 2013-07-17

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